Best Includes Source SDK Games on Steam
| Name | Release Date | Current Players | All-Time Peak | Rating | |
|---|---|---|---|---|---|
|
Half-Life 2 | 16 Nov, 2004 | 34 663 | 54 831 | 96.37 |
|
Left 4 Dead 2 | 16 Nov, 2009 | 31 775 | 69 939 | 96.74 |
|
Garry's Mod | 29 Nov, 2006 | 24 797 | 38 330 | 96.04 |
|
Counter-Strike: Source | 1 Nov, 2004 | 11 187 | 14 784 | 95.07 |
|
Black Mesa | 6 Mar, 2020 | 2 690 | 4 208 | 93.96 |
|
Portal | 10 Oct, 2007 | 763 | 2 092 | 97.17 |
|
Half-Life 2: Deathmatch | 1 Nov, 2004 | 698 | 1 230 | 88.40 |
|
Menace from the Deep | 2024 | 682 | 1 518 | 79.18 |
|
Left 4 Dead | 17 Nov, 2008 | 649 | 2 213 | 94.62 |
|
No More Room in Hell | 31 Oct, 2013 | 606 | 2 119 | 88.54 |
|
Day of Defeat: Source | 12 Jul, 2010 | 490 | 677 | 89.62 |
|
Alien Swarm: Reactive Drop | 20 Apr, 2017 | 211 | 664 | 92.75 |
|
Half-Life 2: Episode Two | 10 Oct, 2007 | 155 | 530 | 95.16 |
|
Fistful of Frags | 9 May, 2014 | 111 | 206 | 89.62 |
|
Half-Life 2: Episode One | 1 Jun, 2006 | 109 | 517 | 93.76 |
|
Pool Nation FX Lite | 7 Dec, 2015 | 74 | 308 | 70.06 |
|
Astro Colony | 7 Nov, 2022 | 66 | 742 | 79.27 |
|
Selaco | 30 May, 2024 | 38 | 1 104 | 89.83 |
|
Day of Infamy | 23 Mar, 2017 | 36 | 63 | 81.03 |
|
Empires Mod | 28 Jul, 2008 | 29 | 57 | 81.91 |
|
Zombie Panic! Source | 3 Oct, 2008 | 28 | 74 | 82.25 |
|
Battle Grounds III | 30 Jun, 2019 | 15 | 162 | 82.89 |
|
Pirates, Vikings, and Knights II | 12 Feb, 2010 | 13 | 65 | 84.92 |
|
Hidden Through Time 2: Discovery | To be announced | 9 | 44 | 78.03 |
|
The Liminal Universe | Coming soon | 8 | 8 | 61.25 |
|
BrainBread 2 | 9 Mar, 2022 | 7 | 25 | 71.52 |
|
Double Action: Boogaloo | 23 Oct, 2014 | 7 | 27 | 90.37 |
|
Kreedz Climbing | 15 Jun, 2017 | 4 | 10 | 78.23 |
|
Rise of the Triad | 31 Jul, 2013 | 4 | 23 | 64.53 |
|
Absorber | 9 Jul, 2023 | 3 | 70 | 71.15 |
|
Sunrise: survival | 3 Aug, 2017 | 1 | 19 | 49.33 |
|
Kingdom of Atham: Crown of the Champions | 12 Jan, 2024 | 1 | 26 | 73.54 |
|
The Backrooms Project | To be announced | 0 | 0 | |
|
Momentum Mod | To be announced | 0 | 0 | |
|
ExtracTD Demo | Coming soon | 0 | 0 | |
|
Pool Nation FX - Unlock All Locations | 7 Oct, 2015 | 0 | 0 | |
|
Battle For It All | To be announced | 0 | 0 | |
|
Rap simulator Demo | Coming soon | 0 | 0 | |
|
Deluxe Content - Cossacks 3: Days of Brilliance | 13 Dec, 2016 | 0 | 0 | 73.71 |
|
Angry Tiny Sun | To be announced | 0 | 0 | |
|
Aperture Tag: The Paint Gun Testing Initiative | 15 Jul, 2014 | 0 | 0 | 80.81 |
| forclaz - DLC 1 | 0 | 0 | |||
|
Red Tower | Q1 2024 | 0 | 0 | |
|
Captain Content Pack | 22 Jun, 2016 | 0 | 0 | |
|
Gravity Control | Coming soon | 0 | 0 | |
|
A Long Night For Crazy King Demo | Coming soon | 0 | 0 | |
|
Backrooms: Perpetual | Coming soon | 0 | 0 | |
|
Dino Hazard: Chronos Blackout | 22 Dec, 2023 | 0 | 10 | 80.05 |
|
'83 | To be announced | 0 | 0 | |
|
Half-Life 2 RTX | Coming soon | 0 | 0 |